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2 years ago

7

Which of the following states that an orbital can contain two electrons only if all other orbitals at that sublevel contain at l

east one electron?8

1 answer:

Vesnalui [34]2 years ago

5 0

Isn't that Hund's rule????

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What is the SI unit used to measure weight?

stepladder [879]

Answer:

The si unit used to measure weight is kilogram /kg

7 0

1 year ago

What are the Lewis definitions of an acid and a base? In what way are Bronsted definitions? they more general than the In terms

kati45 [8]

Explanation:

Lewis definition of Acids and Bases

Chemical species which are capable of accepting electron pairs or donating protons are called Lewis acid.

Chemical species which are capable of donating electron pairs or accepting protons are called Lewis base.

Bronsted definition of acids and bases

Chemical species which are capable of donating H+ are called Bronsted acids.

Chemical species which are capable of accepting H+ are called Bronsted bases.

So all Bronsted acids are Lewis acids but all Lewis acids are not Bronsted acids.

For a chemical species to behave as Lewis acid, they must have:

Incomplete octet
Double bond
Vacant d-orbitals

For example, in BF3, octet of boron is incomplete, so it can accept a pair of electron and behaves as Lewis acid.

For a chemical species to behave as Lewis base, they must have:

lone pair of electrons

For example, NH3 and OH, both N and O have lone pairs of electrons, hence behave as Lewis base.

4 0

2 years ago

What is the mass of silver that can be prepared from 1.50 g of copper metal?

noname [10]

Molar mass:

Ag = 107.86 g/mol
Cu = 63.54 g/mol

Mole ratio:

Cu(s)+2 AgNO₃(aq)→Cu(NO₃)₂(aq)+2 Ag(s)

63.54 g Cu ------------- 2 x 107.86 g Ag
1.50 g Cu -------------- ??

Mass Ag = 1.50 x 2 x 107.86 / 63.54

Mass Ag = 32358 / 63.54

= 509.25 g of Ag

hope this helps!

5 0

3 years ago

True or false 1. A scientific model is representation of a particular phenomena

cupoosta [38]

Answer:

True

Explanation:

The given statement is true.

A scientific model is defined as the mathematical and physical representation of a process or event. Scientists perform several observations or experiment and find a connection between them to prove a scientific finding.

A scientific model has the ability of explanatory power which helps to make things easier to understand using diagrams and consistency across contexts. Testing and prediction power in scientific models leads to strong predictions and able to convince people using an appropriate model.

Hence, the correct answer is "true".

4 0

3 years ago

i have no idea what I'm supposed to do but apparently you need to use table D for table E, i will give brainly to someone if the

Valentin [98]

Explanation:

It most likely telling you how to work it out and try to find the key word, if not try to see how much each percent is, and you can try and break it up a little. (I hope that helped you out)

6 0

2 years ago

Read 2 more answers